|
|
PDF RF2690 Data sheet ( Hoja de datos )
| Número de pieza | RF2690 | |
| Descripción | W-CDMA RECEIVE AGC AND DEMODULATOR | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RF2690 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
Preliminary
7
Typical Applications
• W-CDMA Systems
RF2690
W-CDMA RECEIVE AGC
AND DEMODULATOR
Product Description
The RF2690 is an integrated complete IF AGC amplifier
and quadrature demodulator designed for the receive
section of W-CDMA applications. It is designed to amplify
received IF signals, while providing 70dB of gain control
range, a total of 90dB gain, and demodulation to base-
band I and Q signals. This circuit is designed as part of
RFMD’s single mode W-CDMA chipset, which includes
the RF9678 as modulator and IF AGC and the RF2638 as
upconvertor. The IC is manufactured on an advanced
25GHz FT Silicon Bi-CMOS process, and is packaged in
a 20-pin, 4mmx4mm, leadless chip carrier.
1.00
0.90
0.60
0.24 typ
3 0.20
4.00
sq.
0.65
0.30
4 PLCS
2.10
sq.
12°
MAX
0.75
0.50
0.05
0.50
Dimensions in mm.
NOTES:
1 Shaded lead is Pin 1.
Note orientation of package.
2 Pin 1 identifier must exist on top surface of package by identification
mark or feature on the package body. Exact shape and size is optional.
3 Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
4 Package Warpage: 0.05 mm max.
5 Die Thickness Allowable: 0.305 mm max.
0.23
0.13
4 PLCS
Optimum Technology Matching® Applied
Si BJT
üSi Bi-CMOS
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
NC 2
NC 3
W-CDMA IN+ 4
W-CDMA IN- 5
6
20 1 17 18
Gain
Control
I/Q Cal
Div
4
Mode Control
& Biasing
8 7 9 10
14 I OUT+
13 I OUT-
15 ENCAL
16 FCLK
12 Q OUT+
11 Q OUT-
19 VREF2V
Package Style: LCC, 20-Pin, 4x4
Features
• Digitally Controlled Power Down Mode
• 2.7V to 3.3V Operation
• Digital LO Quadrature Divide-by-4
• IF AGC Amp with 70dB Gain Control
• 80dB Maximum Voltage Gain
Ordering Information
RF2690
W-CDMA Receive AGC and Demodulator
RF2690 PCBA Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
7
Rev A4 010918
7-39
1 page  
Preliminary
RF2690
Pin
1
2
3
4
Function
VGC1
NC
NC
W-CDMA
IN+
Description
Interface Schematic
Analog gain control. Valid control voltage ranges are from 0.5V to 2.5V.
These voltages are valid with a 10kΩ resistor in series with GC pin.
Unused. Connect to signal ground in application.
Unused. Connect to signal ground in application.
W-CDMA balanced input pin. This pin is internally DC-biased and
should be DC-blocked if connected to a device with a DC level present.
For single-ended input operation, one pin is used as an input and the
other W-CDMA input is AC coupled to ground. The balanced input
impedance is 2.4kΩ, while the single-ended input impedance is 1.2kΩ.
BIAS
1200 Ω
W-CDMA IN+
BIAS
1200 Ω
W-CDMA IN-
5 W-CDMA Same as pin 4, except complementary input.
IN-
See pin 4.
6
VCC
Supply
7
GND
Connect to ground.
8 LO LO input pin. This input is internally DC-biased and should be DC-
blocked if connected to a device with DC present. The frequency of the
signal applied to this pin is internally divided by a factor of four, hence
the LO applied should be four times the frequency of the IF.
9 EN WUP Warm-up mode enable. The input LO buffers and divider chains are
enabled. When logic “low” (<0.5V), chip is in warm-up mode. When
logic “high” (VCC -0.3V), chip is in W-CDMA RX mode.
10
EN RX
Chip enable. Power down. When logic “low” (<0.5V), all circuits are
turned off. When logic “high” (VCC -0.3V), all circuits are operating.
11 Q OUT- Complementary output to Q OUT+.
12 Q OUT+ Balanced baseband output of Q mixer. This pin is internally DC-biased
and should be DC-blocked externally. The output may be used single-
VCC
ended by leaving one of the pins unconnected, however half of the out-
put voltage will be lost.
VCC
150 µA
150 µA
13
I OUT-
Complementary output to I OUT+.
14 I OUT+ Balanced baseband output.
VCC
VCC
150 µA
150 µA
15 ENCAL Calibration enable.
16
FCLK
FCLK clock reference for the automatic calibration circuitry.
17 IF-
18 IF+
Rev A4 010918
Complementary output to IF+.
IF test point output. This balanced node is pinned out to allow for moni-
toring of the AGC output signal as it enters the demodulator. During
normal operation, this pin and its complementary output should be left
floating and not connected.
20 kΩ
7
Q OUT+
Q OUT-
I OUT+
I OUT-
7-43
5 Page 
Preliminary
RF2690
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
JP3
+5V 1
-5V 2
C21
1 uF(16V) +
+ C22
3
1 uF(16V)CON3
C8
1 nF
TP1 TP2
VREF2V IFP
TP3
IFN
Drawing 2690400 Rev -
C9
100 pF
C11
10 pF
TP4
ENCAL I OUT P
+5V
C14
100 nF
VGC
J2
WCDMA
C2
50 Ω µstrip5.1 pF
C4*
DNI
JP1
8
7
6
5
4
3
2
1
HDR 8
+ C7
1 uF
L2
150 nH
C6
100 pF
R1
10 kΩ
R7
680 Ω
C10
ENRX 10 nF
ENCAL
ENWUP
VGC
VCC
* 20 19 18 17 16 *
1 15
2 14
3 13
4 12
5 11
* 6 7 8 9 10 *
C12
100 nF
R12* C13
DNI 100 nF
TP5
I OUT N
TP6
Q OUT P
C18
100 nF
R13* C19
DNI 100 nF
VCC
ENWUP
ENRX TP7
Q OUT N
C20
100 pF
50 Ω µstrip
C23*
DNI
C24*
DNI
R2
10 kΩ
R3
10 kΩ
R4
10 kΩ
R5
10 kΩ
R14
20 kΩ
7
3+
U2
8
6
2-
4
5
CLC426
R15
20 kΩ
+5V C16
R16 100 nF
20 kΩ
7
3+
U3
8
6
2-
4
5
CLC426
R17
20 kΩ
R18
51 Ω
C15
100 nF
R19
51 Ω
C17
100 nF
50 Ω µstrip
50 Ω µstrip
R10 R9 R8
1M 1M 1M
J3
FCLK
J5
IOUT
-5V
J6
QOUT
-5V
J4
LO IN
7
Rev A4 010918
7-49
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet RF2690.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RF2690 | W-CDMA RECEIVE AGC AND DEMODULATOR | RF Micro Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |